The present invention is directed towards immunity enhancing activity in Chlorophytum (Safed Musli) due to a novel gel forming aqueous extract of Chlorophytum (Safed Musli) or its partially or completely purified carbohydrate (polysaccharide), and thereby Chlorophytum or its aqueous extract or gel or carbohydrates form a useful and safe health promoting substances that can be consumed alone or as additve in food, food products etc. or as functional food, dietary substances and nutraceutical. Further, the bioactive substance compositions comprising novel carbohydrates particularly but not limited to Chlorophytum or Musli glucomannan (MGM) discovered herein from the plant. Thus the plant, plant aqueous extract, partially purified or completely purified carbohydrate products and its associated processes, properties, uses and applications in any mode form the components of this invention. The novel bioactive polysaccharide/heteroglycan of the plant invented herein preparations are positive biomodulators for mammalian physiology to jack-up its its immune defence in normal as well as diseased and ailing individuals. These compositions if comsumed orally or otherwise would improve the well being of mammals suffering from or sucsceptible to a variety of bodily inefficient functions or disorders in general and immune system related ones in particular. The invention allows alternate designation of Chlorophytum as Indian Konjac.
